Railway-track drill.



7 O 9 1 9 2 N A D E T .N E T A I P L -L RI R N D .AK L0 A R T HY A W AWE A APPLICATION FILED AUG. 25; 1906.

' SHEETS-SHEET 1.

lnvenhov No. 842,544. C PATENTBD JAN. 29, "1 907.

A. H. HANDLAN, JR.

RAILWAY TRACK DRILL.

APPLICATION FILED AUG. 25. 1906. v

2 SHEETS-SHEET 2.

m ni b I I Q speedily adjusted-to operative position and rod, while permitting longitudinal move- 4 the State of Missouri, have invented certain 'through the cross bars 3 and 4 of said rated between the forward end of the hori' zontal frame 2 and the cross-bar 4 and in when STATES regular OFFICE.

ALEXANDER H. HANDLAN, JR., or ST. Louis, MISSOURI.

RAILWAY-TRACK DRILL.

T 0 all whom it ntrw col warm- Be it known that I, ALEXANDER H. HAND.- LAN, J12, a citizen of the United States of America, residing in the city of St. Louis, in

new and useful Improvements in Railway- Track Drills, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification. I

My invention relates to that class of drills used for boring holes in railway-rails; and it I has for its object to providea drill of this character having means for operating a plurality of drill-bits.

It also has for its object to provide quick-- acting means by which the drill-bits may be withdrawn from such operative position.

Figure I is a view, partly in plan and partly in horizontal section, of my track-drill. Fig. 11 is a view of the track-drill, partly in side elevation and partly in vertical longitudinal section. Fig. 111 is an enlarged front eleva-,; tion of the lower portion of the track-drill, with parts shown in vertical cross-section, taken Online 111 111, Fig'. 11. A

-1 designates the base-plate of my drill, and 2 is a rectangular horizontal frame supported by said base. Within the horizontal frame is-a pair of cross-bars 3, arranged parallel with each other, and a third cross-bar 4, the latter being located near the forward end of the horizontal frame. I

. 5 designates a pair of drill-rods that are journaled in the front end 'of the horizontal frame 2 and its cross-bars 3 and 4, these rods being provided at their forward ends with chucks 6, that are adapted to receive thedrill- 1 bits a. Each drillrod is provided with a lon- 'gitudinal groove 5, and mounted upon each rod between the forward end'of the horizontal frame 2 and the cross-bar 4 is a pinion], that is grooved to receive a spline that fitsin the longitudinal groove of the drill-rod and serves to hold the pinion from rotation on the ment of the rod within-the pinion.

' 8 designates a horizontal driving-shaft that is journaled in the forward and-rear ends .ofthe horizontal frame 2 and passes freely horizontal frame- This driving-shaft has keyed to it a driving gear-wheel 9, that is 10- I Specification of Letters Patent. Application filed Ailgust 25, 1906. s mi No. 331,964.

Patented Jan. 29, 1907.

mesh with the drill-rod pinions 7, whereby upon the rotation of said shaft rotary motion is imparted to the drill-rods for the operation of the drill-bits carried thereby.

. 10 is a bevel gear-wheel fixed to the driving- I shaftSL- r 11 designates a rectangularvertical frame surmounting the horizontal frame 2 and having horizontal arms hinged to the latter, and 12 is a vertical shaft journaled in said frame.

This vertical shaft has fixed to its lower end a bevel gear-wheel 13, that is arranged, in mesh with the bevel gear-wheel 10 on the drivihg-shaft 8. Fixed to the upper end of the vertical shaft 12 is a bevel gear-wheel 14, that'is arranged in mesh with a bevel gear: wheel 15, fixed to a horizontal shaft 16, .journaled in the upper portion of the vertical frame 11. with hand-cranks 17, by which said horizontal shaft may be operated to cause it to drive the vertical shaft 12 through the medium of the gear-wheels 15 and 14 and cause said last-named vertical shaft to dri e the horizontal driving-shaft 8 through the :ne

dium of the bevel gear-wheels 13 and 10;

- 18 is a cross-head that is loosely fitted to The horizontal shaft 16 is provided and carriedby the horizontal driving-shaft-S and in which thedrillw-rods 5 are fitted. The drillrods: are permitted to rotate in said cross-head; but the rods and cross-head are held from individual movement relative to each other by suitable means, such as setscrew 19, introduced'intothe cross-head (see Fig. I) and entering into annular grooves in the drill-rods,

20 designates a feed-screw sleeved on the driving-shaft 8 at the rear of the cross-head 18-and having its forward end fixed to said cross head. v

21 is a ratchet-wheel threadedinteriorly and mountedmpon the-feed-screw 20 between the rear cross-bars 3, the said ratchet wheel bein adapted to rotate on said feedserew for t e purpose of imparting longitudinal movement to the feed-screw on the driving-shaft and moving the cross-head 18 in either a forward direction or a rearward direction in order that the drill rods and their bits may be carried forwardly toward the railway-rails to bedrilled for drilling operation or retracted from said rails. The ratchet-wheel 2 1 is operated through the me dium of mechanism now to be described.

22 is a rock-shaft journaled in one of the rear cross-bars 3 and the forward cross-bar 4.

' This ro'ck shaft is provided its forward end with an-armz23-, the. free-end of: which is arranged in engagement with a cam 24; fixed to the driving-shaft 8 between the forward cross-bar f1: and the bevel gear-wheel 10. At the rear end of. the rock-shaft is a crank-arm 25, to pivoted a pawl 26, that is ar- ..ranged in engagement with the ratchetmid-serving to yiel wheel 21'. v j I 2'2Lis: agspning. a plied to: the rock-shaft ingly hold thearr'n23 of said shaft'a ainst the cam 24.

"During t e operation ofthe-machine the cam: 24v is' rotated. with the-driving-shaft 8,

and said camoperates to intermittently move therock shaft armQS, thereby causing the rock-shaft: to be rotated and impart rotationfto the ratchet-wheel 21 through the medium of the' pawl 261 to affect the forward feeding action of the drill-rods.

. For the purpose of roviding for the quick.

adjustment of. the '(lm l-rods in setting them to the track rails-that are to be drilled and also quickly retracting them from the rails l utilize the mechanism whiehwill now be de scribed.

27 is-a horizontal settingbevel gear-wheel that is journaled toa horizontal cross-bar 28,

supported by the horizontal frame 2 between the rear endof the latter and-a'rear cross-bar This setting-wheel is arranged in meshwith a bevel gear-wheel 21, formed on the rear part" of the ratchet-wheelfil.

The'setting bevel ear-wheelis provided with a handle 29, by W hich it is rotated. It will ;be seen that by rotating the setting bevel gear-wheel the -(Eon'ibined bevel gear-wheel. 21', and ratchet wheel 21 may be speedily rotated in either direction to reci rocate the feed-screw 20 with the cross-hea 18-and set" the drill-rodsint'o drillingposition .or retract them from drilling p'ositlon, due to quick movement of the feed-screw 20 and the cross-;

head 18. In this connection it is obvious that when the drill-rods are-to besretracted it is necessary to remove the pawl'26 fromengagement with the ratchet-wheel 21.

30 designates a pair of claws that are piv-- otally connected tothe hinged horizontal arms of the vertical frame 11 and are adapted to be placed' in engagement with the rail- Wayrail to be drilled at the opposite side of said rail to that to which the drill-bits are applied an dwhich serve as restraining members 0 during he drilling operation. a

31 designates a jointed folding bracet'hat connects the'vertical frame of the 'drill to the horizontal frame and which is adaptedito be unjointed-to peimit the lowering of} the vertical frame to the horizontal? frameto-releasethe pair of claws 30.

I claim-- I .A railway tra'ck drill. comprising a; base plate, a rectangular horizont'ah frame supported upon the base-plate, having'apair'of. rear. cross-bars and a forward. cross-bar, a pair of drill-rods journaled in the-front e'nd of the horizontal frame and in the rear and for- .ward cross-bars, pinions splined tov the drill-- rods, between the front end oh the horizontal 70 frame and the'forwardIeross-bar, and through which the drill rods-are ad; ted. to slide, a

driving-shaft journaled .in t e"forward and rearends of the horizontal frame;'a'crossheadcarr-ied by the drill-rods, a driving gearwheel ke ed to the drivin shaft between the E. s.-K.NIGHT, i

NELL'IE ,V. ALEXANDER. 

